GRC. The OE-303 is also referenced herein as: The antenna system.

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MIL-DTL-49295C

4.10.4 Immersion. The antenna system, as prepared for fixed transport, shall be subjected to the immersion test

in accordance with method 512.5, procedure I of MIL-STD-810. At completion of this test, the antenna system shall

be subjected to post test procedures without being dried in any manner other than induced by necessary handling.

Post tests, as specified in 4.5 shall be completed. When any combination of high temperature, low temperature and

immersion are done on the same sample, 4.5.3 need only be done once after completion of these tests (see 3.5.7,

4.10.5 Rain. The antenna system shall be subjected to rain test in accordance with method 506.5, procedure I of

MIL-STD-810. During each 30 minute rain period, wind shall be maintained for 15 minutes, commencing 5 minutes

after the start of the period as specified in the procedure. The test specified in 4.5 shall be performed at the end of

this test (see 3.5.2, table IV).

4.10.6 Sunshine. The antenna system shall be exposed to the sunshine test in accordance with MIL-STD-810,

method 505.5, procedure II. Before and after test, the test specified in 4.5.1 shall be performed (see 3.5.9, table IV).

4.10.7 Fungus. The antenna system, with all covers removed, shall be tested in accordance with test method

508.6 of MIL-STD-810. There shall be abundant growth colonization (see 6.7) on 50 percent or more of the area

control item after 14 and 28 days. No cleaning of the equipment together with cases and accessories, is permitted for

72 hours prior to the start of fungus test. Failure of the equipment to meet the requirements of 3.5.4 shall constitute

failure of this test (see 3.5.4, table IV).

4.10.8 Humidity. The antenna system shall be subjected to test method 507.5, procedure II of MIL-STD-810,

except that in step 6 the number of humidity cycles shall be reduced from 5 to 3. At step 8, the antenna system shall

be removed from the chamber and the tests of 4.5 shall be conducted (see 3.5.3, table IV).

4.10.9 Wind/ice load. The antenna system shall be subjected to the load test of figure 2. Visual and mechanical

inspection shall be conducted as pretest and post test (see 3.5.11, table IV).

4.11 Finish. Finish shall be inspected in accordance with the quality assurance provisions of MIL-DTL-14072 for

Type I (exposed) equipment surfaces (see 3.2.3, 4.3).

4.12 Interchangeability.

4.12.1 Inspection during first article testing. Within each system all parts required by the design to be fitted

together shall be assembled or fitted together. Observation for correctness of fit shall be conducted. These parts

shall then be interchanged among other first article samples and assembled or fitted together. Observation of

correctness of fit shall be repeated (see 3.2.2, table I).

4.12.2 Inspection during group B acceptance tests. Within each antenna system under group B test parts shall be

designated for interchangeability test. These parts shall be interchanged two ways with like parts in the accepted first

article sample. Observation of correctness of fit in both systems shall be observed (see 3.2.2, table III).

4.13 Marking. Marking shall be visually inspected to determine compliance with 3.2.4 (see 3.2.4, 4.3).